Sewing-machine folder.



A. H. .113 VOE. SEWING MACHINE FOLDER.

APPLICATION FILED APR. 27, 1908.

Patented Sept. 20, 1910.

2 sums-SHEET 1.

' WITNESSES:

AMA

"WE/WW A TTORN E Y A. H. DE VOE SEWING MACHINE FOLDER.

APPLICATION FILED APR.27, 190a.

Patentd Sept. 20, 1910.

2 SHEET$SHEET 2.

/ IV V N TOR I B) r ALBERT n. on VOE, or ELIZABETH,- new miss on, assienon TO SINGER MANU- FACTURING COMPANY, A CORPORATION OF NEW JERSEY.

SEWING-MACHINE FOLDER.

Specification of Letters Patent.

Patented Sept. 20, 1919.

Application filed April 27, 1908. Serial No. $29,482.

To all whom it may concern:

Be it known that I, ALBERT H. DE Von, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Sewing-Machine Folders, of which the following is a specification, reference being had therein to the accon'ipanying drawings.

This invention has for its object to provide a folding attachment for sewing machines of which the component parts may be readily opened out for insertion of the material to receive the hem or other fold.

The invention consists essentially in a folder comprising a scroll composed of a plurality of independently sustained separable and laterally abutting sections, with means for separating said sections for convenient introduction of the material.

It also includes a workbending tongue or arbor adapted to be shifted out of its normal alin'emcnt with the scroll.

In its preferred fornn the folder-is mount ed upon the pressenfoot with theseparahle portions of its scroll rigidly connected with separable portions of the presser-folit, one of which latter comprises a section containing the needle-hole and disposed in direct alinement with the delivery end of the folder, so that the raising of a section of the scroll involves a corresponding lifting of a portion of the presser-foot surrounding the needlepath in order to insure the ui'iobstructed advance of the initial end of the folded mate rial beneath the needle. The presser-bar is provided with a well-known form of lifter including an operating rod extending bent n the table or support of the sewing machine and connected with a suitable treadle or knee-lever, whereby not only may the presser-foot be lifted, but the folder may be opened out for introduction or removal of the material without the use of the operators hands. 0

The invention will be understood by reference to the accompanying drawings, in which Figure l is a rear side elevation of a sewing machine provided with the present in1- provements, and Fig. 2 a front end view of the same. Fig. 3 is a planet a portion of the work-plate of the sewing machine with the attachment in place thereon. Fi 4: is a rear elevation of the attachment with its component parts in operative position, and Fig. 5 a similar view showing the presser-t'oot raised and the folder parts in retracted position. Fig. 6 is a perspective View, upon an enlarged scale, of the attachment with a section of the material undergoing a folding and stitching operation, and Fig. 7 a similar view oi. the attachment with its component parts in retracted position. The machine is shown herein constructed with a frame comprising the base 1 and overhanging bracketarm 2 in the forward endof which is journaled the reciprocating needle-bar 3 carrying a needle 4: cooperating with. the rotary looper 5 in the production of the chaiinstitch seam. The had of the b1216l(t11111 carries the usual presserbar 6 provided with the thrust-collar 7 between which and the end of the adjusting screw 8 is interposed the pressure spring 9,- the collar 7 having a lateral lug 10 adapted for engagement with the cam portion of the lifting lever 11 fulcrumed at 12 upon the head of the bracket-arm. -'Beneatl1 the collar 7 the presser-bar 6 is embraced by a perforated lateral ear 13 upon the lower end of a link-bar 14 pivotally connected at its upper end by means oi a stud-screw 15 with the forward end of a lifting rock-lever 16 fulcrinned at 17 upon the bracket-arm and having in its rearward end an eye 18 entered by the hooked upper end'ot a connecting rod 19 extending downwardly below the base of the machine and'adapted to be connected with and operated by a, treadle or knee lever in a manner well known. The forward end of the lever 16 is normally maintained down in inoperative position by means of the spring l6 secured to the same at one end and at the opposite end to the head of the bracket-arm 2.

\Vithin the transversely slotted lower end of the presser-bar 6 is secured by means of a fastening screw 20the slotted fiat shank 21 of the presser-foot having a rigid main foot-portion 22 and a separable needle-hole portion 23 provided with the needle-hole 2st and having'its forward portion offsetat 25. The forwardly extending rigid too portion 26 at the right of the needle-hole portion has afiixed thereto the main scroll section 27 having arranged continuously with its lower edge the flat work-supporting plate 28 arran ed fiush with the lower operative v face of the presser-foot. The conical scroll no is closecl upon the opposite side by a removable section 29 whose upper edge abuts against the adjacent edge of the main scroll. section in a longitudinal line extending to ward the needle-hole 24. The forward end of the scroll section 29 is secured to and carried by the lateral cross member 30 of a forwardly extending lever 31 fulcruined rupon a stud-screw 32 mounted updn a bearing lug upon the presser-t'oot and having a rearwardly extending'tall portion 34. To

. the cross member 30 (if-the lever 31 is also tinuous [which they together constitute, edge-turning fportio'ns adapted to turn the material along posite SltlCSOf the center line of the coninvolute Work-guiding element the opposite edges of the hem. Disposed normally in alinemei'itwith the scroll 2T '29, is the workbending member or arbor, herein represented as a coni ral tongue 35, which is secured upon the forward end ot a laterally curved lever 36 having a hollO'W post 37 fitted upon the vertical studscrew 38 carried by the body of the presser foot and having a rearwardly and laterally extending tail portion 39 terminating in a backwardly extending finger 40. The post 37 is surroul'idedby a spring 41 having one extremity connccted with the Presser-footshank 'ZL-aiiE the other end embracing the, edge ot the level: 86, whereby the tongue is maintained normally in central relation with the scroll 27 -As will be seen by reference 'to Fig. 3, the forward arm 36 of thearbor-s:ipporting lever is adapted to rest against the adjacent: edge of the jfOOt-ll'lclllbtl 23 which serves as a stop to insure the normal disposition of the arbor 3:) in proper relation with the scroll under the action of the spring' 'ilQ v A flat spring 42 is secured at one end by means of screws 43 to the n'csser-t'oot-shank and has its opposite end resting upoirthe 'lorwarijl end ot thelever 31 for maintaining the parts 23an'd 2t) normally in operative relation with the parts 22 and J7. 'lhe shank of the prcsseisl oot is shown provided with a lateral bearing lug 44 carrying a tulcrlnji'i-screw 45 upon which is mounted an angular lever having a downwardly and transversely inclined arm 46- having, its lower edge formed with a straight cam por- ,tio n. 47 adapted to tmeratively engage the top oththe tail portion 34 of the lever 31. and

, a, second concaved portion 48 adapted to o 'ierativelyengage, the linger 40 of the tailwhen the operating lever to 49 istilted to swa /4i member 52 of the head of the bracket-arm.

when the presser-foot is raised, as shown in Fig. 2, being at other times disposed slightly beneath such fixed part of the machine, as represented in-Fig. l.

In practice, the boss of the lever 31 surrounding the stud-screw 32 is fitted loosely to the latter so as to allow a small amount of lateral play to the lever and the operative parts carried thereby. As will be observed, the right-hand edge of the needle-hole section 23 of the presser-foot is fitted closely to the adjacent edge of the body portion 22, while the opposite eth c of the needle-hole portion is .closely con 'ned by the adjacent edge of the spring-pressed lever 36. Thus,

shift the levers 31 and 36 by engagement of the cam portions 17 and 48 with the parts 3st and 40, respectively, the lateral movement of the lever 36 relieves the side pressure upon the presser-foot section 23 and permits the latter with its carrying level-3t to yield laterally in case the lower edge of the scroll section 29 extends sutliciently beneath the work bending tongue, 35 to rub against the latter in its rising motion so as to be suiticiently deflectedto avoid possible interference therewith.

In the operation of 'tliedev'ice, the presserfoot is raised, either by operation of the finger lever 11 or the knee or foot actuated represented in Figs. 2, 5 and 7; and. the 'forward end of the margin of the material a is introduced above the work-supporting plate 98 and into the laterally open scroll sectionQT, where it can be readily guided beneath the raised needle-hole section of the presser-fi'iotby the use of av stiletto, if found necessary. and partially formed into the desired hem I), the prcsser-toot is lowered upon the 'workplate 53, which causes the-tongue 35 to move laterally toward the scroll-member 27 to bend the margin of the material in conform- .ity' with the latter, while the descent ot the scroll section 25) serves to bend the edge portion oi the material downwardly around the tongue 35 and within the curl inthe margm of the material produced by the memhers 27 and As the needle-hole portion 23 of the prcsser-t'oot does not 'whollyresumo its normal working position until the parts 21) and 35 are in normal relation with the lixcd' seroll member or section 27, it. is evident that-uthe formation of the hem is fully completial before pressure is applied The material being in position.

to the same beneath the needle-hole to determine its permanent form preparatory to the stitching operation.

lVhile the present improvement is designed particularly for use in comiection with thin materials lacking sutiicient stit'lness for easy control in the usual manner, it is evident-that the improvement is suscep tible of general use with any class of material.

Having thus set forth the nature of the invention what I claim herein is 1. A sewing machine folder comprising; a scroll composed of a plurality of independently sustained separablesections having abutting edges and constructed and arranged to afford a continuous involute edgeturning; surface, and means for shiftingone of said sections out of operative relation with the other and in a direction transverse to the axis of the scroll and to its own operative surface where it abuts the other section.

2. A sewing machine folder comprising a scroll and a work-bending member 0- arbor bodily movable in relation to said scroll, a spring-actimti-al carrier for said arbor. a stop'for deteri'nining the normal operative position of ,the arbor, and'ineans for laterally shifting said arbor from operative relation with said scroll for introduction ot the work.

3. A sewing machine folder comprising a scroll composed of a plurality of separable sections, a worlobemliug member or arbor normally in alinement with said scroll but supported independently of said sections, and means for separating said scroll sections and shifting them out of operativerelation with each other and with the work-bending member or arbor for introduction and r moval of the work.

l. Al sewing machine t'older comprising a scroll composed of a plurality oi.indepemlently sustained and relatively movable sec tions having edge-turning portions respec tively upon oppo i sides of the center line and a worlcbemling member or arbor normolly in alinement with said scroll intermediate said edge-turning portions but inde iiendently sn 'jvported and ditl'erentiall y movable in relation to the scroll sections.

5. 1 sewing machine folder comprisino' a scroll composed of a plurality of sepa. able sections one of which is laterally movable in relation to the other a longitudinal tongue normally ei'nln'aced by said scroll but mounted for lateral movement; transversely tothe direction of relative lateral movement of the scroll. sections, and means for shifting said tongue out of operative relation with said" sections,

(f). A sewing machine folder eomprisin a scroll composed of a plurality of separaile sections one of which extended laterally to term a WOFliI-SHPPOIU31g plate and thel other of which is independently supported and laterally movable toward and from said plate, av tongue normally disposed in line with said scroll and supported for lateral movement parallel with said plate, and means for sii'nultaneously shitting;- said movable section and tongue out of operative relation with the other scroll section.

7. The coi'nbination with a sewing machine presser-ttml; ot' a folder comprising a scroll composed of a plurality of separable sections one ot which is rigidly attached to and carried by said presser-loot, a lever pivotally attached to said pressertoot and -arr ving another of said scroll sections, a

work-bending member or arbor in aliuein ut with said scroll, a second lever pivotall attached to and carried by said pre:-;ser-toot and carrying said wm'lcbending inen'iber or arbor and means for moving said lovers to bring the component parts of the hemmer respectively into operative and immerative relation.

8. The combination i 'h a sewing machine presser-hmt, of a folder com lllslllg a scroll composed of a plurality of separable sections one of which is rigidly at ached to and carried by said pressei toot, a lever pivotally mounted upon said prr ser-t'oot and carrying another ot said scroll sections a work-bending member or arbor in alinennait with said scroll, a second lever pivotally mounted upon said presser-foot and movable transversely of the movements of the firstnamed lever and carrying said worlc bending member or arbor, and. means for moving said levers to bring the component parts of the hemmer respectively into operative and inoperative relation.

SLThe combination with a sewing machine presscr-tooh ot a folder comprising a scroll composed of a plurality of separable sections one of which rigidl attached to and carried by said pressei t oot, a lever pivotally attached to said pressertooi and carrying another of said scroll sectimns a ,\'orh--bending i'uember or arbor in alinenient \vith'said scroll a second lever pivotally attached to and carried by said presser-toot and carrying said work-taunting member or arbor, an operating lever adapted to openativcly engage and shift said pivoted levers, and means for actuating; said operating. lever.

10. The combination with a sewing' ma chine pressci 'l'oot, ot' a folder comprising a scroll divided longitudinally and vertically into separable la terally abutting sections one ol which is rigidly attached to and carried by said presser-looh a horizontally l'ulcrumed lever carried by said presser-i ootl and carrying; the other of said scroll sections a work-bendlug member or arbor in alinement with said scroll, a vertically fulcruined lever carried by said presser-foot andcarrying said work-bendingmember or arbor, and means for movin 'said levers to bring the component. parts of the hemmer into operative and inoperative relation.

11. The combination with a sewing machine presser-foot, of a folder comprising a. scroll divided lmigitudiimlly and vertically of which is rigidly attached to and carried by said presser-foot, a horizontally fulcrumed lever carried bysaid presser-t'oot and carrying the other or" said scroll sections, a work-bem'ding member or arbor in alinement with said scroll, a vertically fulcrumed lever -arried by said presser-foot and carrying said work-bending member or arbor, springs applied to said levers to press the component parts of the hemmer yielding'ly in )perative relation, and a common operating member for shifting said lovers in opposition to their springs to throw the relatively movable parts of the hcmn'ier out of operative relation.

12. The combination with a sewing ma- "chine presser-foot' composed of a body portion and a relatively movable needle-hole portion, of a folder comprising a scroll composed of a plurality of separable sections one of which is rigidly attached to and Car ried by the body portion of said presser-foot, a lever carrying another of said scroll sec- 'tions and the uecdle-hole section of the presser-foot and mounted upon a fulcrum ried by the body portion of said presser-toot, a lever carrying another of said scroll tions'and the needle-hole section of the prcsser-toot and mounted upon a fulcrum disposed parallel with the operative face of the main portion of the prcsser-foot, a workbcndinp; member or arbor normally in alinemeat with saidscroll, a second lever having a fulcrum. upon said presser-foot disposed transversely of the operating face of its body portion, and carrying said work-bending member or arbor, spriiws applied to said levers 't'or yicldm rly maintaining the meln-y hers carried thereby in operative position,

and means for shifting said levers to sep-' arate said parts.

lst llie combination with a sewmgmachine presser-foot composed of a body por- (ion-and a needle-hole portion, of a folder comprising a scroll composed of a plurality of separable sections one of which is rigidly attached to and carried by the body portion of. said presser-t'oot, a lever carrying an I other of said scroll sections with. the needle into separable laterally abutting sections one upon said presser-t'oot to move transversely of the operative face of the same, a workbending member or arbor normally in alinsmentwith said scroll, a second lever fill crumed upon said presser-foot to move transversely of the movements of the firstnamed lever and carrying: said work-bendinn member or arbor, and means fornioving said levers to bring the component parts of the hcmnwr into operative and inoperative relation. v

15. In a sewing machine, the combination with the prcsser-foot, of a hemmer composed of a plurality of separable scroll secholesection of the presser-foot fnlcrumed tions with laterally abutting edges and flush operative .t'aces, a presser-t'oot lifter,-andop'- erative connections between SZtld presserfoot and the componentparts of said hemmer whereby the lifting of the presser-foot effects the separation of thehemmer parts in the direction of movement of the presserfoot for introduction and removal of the vo'rk. I v,

16. In a sewing machine. the combination with the prcsser-foot, of a hennncr compris ing a scroll including aplurality of separat ble sections with abutting edges and flush operative faces and independently mountedand relatively movable upon said press ertoot, a presser-foot lifter, and an operatlve connection intermediate the movable parts oi": said hemmer and a fixed portion of the machine whereby the lifting of the presserfoot etl'ects the separating'of the hemm'er parts. i 17. In a sewing machine, the combination with the work-plate, of a hemmer composed of a plurality of separable scroll sections and arm-axially disposed work-supporting tongue, and means, including a connection extending downwardly below the Work plate, for diyergently shifting said scroll sections and tongue to separate the component parts of the hemmer for mtroductlon and removal of the work.

ln testimony whereof, I have signed my name to this specification, in the presence of RWit nesses I v ll. A. Kouxmmnn, J12, Josnrn l JAQUI'lfH. 

